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Initial import of gtk2_ardour.

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git-svn-id: svn://localhost/trunk/ardour2@24 d708f5d6-7413-0410-9779-e7cbd77b26cf
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Taybin Rutkin 2005-09-25 18:42:24 +00:00
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/*
Copyright (C) 2003 Paul Davis
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
$Id$
*/
#ifndef __ardour_gtk_imageframe_socket_handler_h__
#define __ardour_gtk_imageframe_socket_handler_h__
#include <string>
#include <gtk--.h>
#include <list>
#include "editor.h"
#include "ardour_image_compositor_socket.h"
class TimeAxisViewItem ;
class ImageFrameView ;
class MarkerView ;
class ImageFrameTimeAxisGroup ;
/**
* ImageFrameSocketHandler defines the handler between Ardour and an Image Compositor
* As this is purely visual, we do all processing within the main gtk loop via
* message passing through a socket.
*
*/
class ImageFrameSocketHandler : public SigC::Object
{
public:
/**
* Constructs a new ImageFrameSocketHandler to handle communication between Ardour and the Image Compositor
*
* @param ed the PublicEditor
*/
ImageFrameSocketHandler(PublicEditor& ed) ;
/**
* Descructor
* this will shutdown the socket if open
*/
virtual ~ImageFrameSocketHandler() ;
/**
* Returns the instance of the ImageFrameSocketHandler
* the instance should first be created with createInstance
*
* @return the instance of the ImageFrameSocketHandler
*/
static ImageFrameSocketHandler* get_instance() ;
/**
* call back to handle doing the processing work
* This method is added to the gdk main loop and called when there is data
* upon the socket.
*
*/
static void image_socket_callback(void *arg, int32_t fd, GdkInputCondition cond) ;
/**
* Attempt to connect to the image compositor on the specified host and port
*
* @param hostIp the ip address of the image compositor host
* @param port the oprt number to attemp the connection on
* @return true if the connection was a succees
* false otherwise
*/
bool connect(std::string hostIp, int32_t port) ;
/**
* Closes the connection to th Image Compositor
*
*/
void close_connection() ;
/**
* Returns true if this ImagFrameSocketHandler is currently connected to rthe image compositor
*
* @return true if connected to the image compositor
*/
bool is_connected() ;
/**
* Sets the tag used to describe this input within gtk
* this is returned when gdk_input_add is called and is required to remove the input
*
* @param tag the gdk input tag of this input
*/
void set_gdk_input_tag(int tag) ;
/**
* Returns the gdk input tag of this input
*
* @return the gdk input tag of this input
* @see setGdkInputTag
*/
int get_gdk_input_tag() ;
/**
* Returns the socket file descriptor
*
* @return the Sockt file descriptor
*/
int get_socket_descriptor() ;
//---------------------------------------------------------------------------------------//
// Handle Sending messages to the Image Compositor
//----------------------------
// ImageFrameTimeAxis Messages
/**
* Sends a message stating that the named image frame time axis has been removed
*
* @param track_id the unique id of the removed image frame time axis
* @param src the identity of the object that initiated the change
*/
void send_imageframe_time_axis_removed(std::string track_id, void* src) ;
/**
* Sends a message indicating that an ImageFrameTimeAxis has been renamed
*
* @param new_id the new name, or Id, of the track
* @param old_id the old name, or Id, of the track
* @param src the identity of the object that initiated the change
* @param time_axis the time axis that has changed
*/
void send_imageframe_time_axis_renamed(std::string new_id, std::string old_id, void* src, ImageFrameTimeAxis* time_axis) ;
//------------------------
// MarkerTimeAxis Messages
/**
* Sends a message stating that the named marker time axis has been removed
*
* @param track_id the unique id of the removed image frame time axis
* @param src the identity of the object that initiated the change
*/
void send_marker_time_axis_removed(std::string track_id, void* src) ;
/**
* Sends a message indicating that an MarkerTimeAxis has been renamed
*
* @param new_id the new name, or Id, of the track
* @param old_id the old name, or Id, of the track
* @param src the identity of the object that initiated the change
* @param time_axis the time axis that has changed
*/
void send_marker_time_axis_renamed(std::string new_id, std::string old_id, void* src, MarkerTimeAxis* time_axis) ;
//---------------------------------
// ImageFrameTimeAxisGroup Messages
/**
* Sends a message stating that the group has been removed
*
* @param group_id the unique id of the removed image frame time axis
* @param src the identity of the object that initiated the change
* @param group the group that has changed
*/
void send_imageframe_time_axis_group_removed(std::string group_id, void* src, ImageFrameTimeAxisGroup* group) ;
/**
* Send a message indicating that an ImageFrameTimeAxisGroup has been renamed
*
* @param new_id the new name, or Id, of the group
* @param old_id the old name, or Id, of the group
* @param src the identity of the object that initiated the change
* @param group the group that has changed
*/
void send_imageframe_time_axis_group_renamed(std::string new_id, std::string old_id, void* src, ImageFrameTimeAxisGroup* group) ;
//---------------------------------
// ImageFrameView Messages
/**
* Send an Image Frame View Item position changed message
*
* @param pos the new position value
* @param src the identity of the object that initiated the change
* @param item the time axis item whos position has changed
*/
void send_imageframe_view_position_change(jack_nframes_t pos, void* src, ImageFrameView* item) ;
/**
* Send a Image Frame View item duration changed message
*
* @param dur the the new duration value
* @param src the identity of the object that initiated the change
* @param item the item which has had a duration change
*/
void send_imageframe_view_duration_change(jack_nframes_t dur, void* src, ImageFrameView* item) ;
/**
* Send a message indicating that an ImageFrameView has been renamed
*
* @param item the ImageFrameView which has been renamed
* @param src the identity of the object that initiated the change
* @param item the renamed item
*/
void send_imageframe_view_renamed(std::string new_id, std::string old_id, void* src, ImageFrameView* item) ;
/**
* Send a message indicating that an ImageFrameView item has been removed message
*
* @param item_id the id of the item that was removed
* @param src the identity of the object that initiated the change
* @param item the removed item
*/
void send_imageframe_view_removed(std::string item_id, void* src, ImageFrameView* item) ;
//---------------------------------
// MarkerView Messages
/**
* Send a Marker View Item position changed message
*
* @param pos the new position value
* @param src the identity of the object that initiated the change
* @param item the time axis item whos position has changed
*/
void send_marker_view_position_change(jack_nframes_t pos, void* src, MarkerView* item) ;
/**
* Send a Marker View item duration changed message
*
* @param dur the new duration value
* @param src the identity of the object that initiated the change
* @param item the time axis item whos position has changed
*/
void send_marker_view_duration_change(jack_nframes_t dur, void* src, MarkerView* item) ;
/**
* Send a message indicating that a MarkerView has been renamed
*
* @param new_id the new_id of the object
* @param old_id the old_id of the object
* @param src the identity of the object that initiated the change
* @param item the MarkerView which has been renamed
*/
void send_marker_view_renamed(std::string new_id, std::string old_id, void* src, MarkerView* item) ;
/**
* Send a message indicating that a MarkerView item has been removed message
*
* @param item_id the id of the item that was removed
* @param src the identity of the object that initiated the change
* @param item the MarkerView which has been removed
*/
void send_marker_view_removed(std::string item_id, void* src, MarkerView* item) ;
//---------------------------------------------------------------------------------------//
// Emitted Signals
/** Emitted if the socket connection is shutdown at the other end */
SigC::Signal0<void> CompositorSocketShutdown ;
/** Emitted as a generic error is captured from the socket connection to the animatic compositor */
SigC::Signal0<void> CompositorSocketError ;
protected:
private:
/* I dont like friends :-( */
friend class Editor;
/**
* Create an new instance of the ImageFrameSocketHandler, if one does not already exist
*
* @param ed the Ardour PublicEditor
*/
static ImageFrameSocketHandler* create_instance(PublicEditor& ed) ;
//---------------------------------------------------------------------------------------//
// Message breakdown ie avoid a big if...then...else
/**
* Handle insert item requests
*
* @param msg the received message
*/
void handle_insert_message(const char* msg) ;
/**
* Handle remove item requests
*
* @param msg the received message
*/
void handle_remove_message(const char* msg) ;
/**
* Handle rename item requests
*
* @param msg the received message
*/
void handle_rename_message(const char* msg) ;
/**
* Handle a request for session information
*
* @param msg the received message
*/
void handle_request_data(const char* msg) ;
/**
* Handle the update of a particular item
*
* @param msg the received message
*/
void handle_item_update_message(const char* msg) ;
/**
* Handle the selection of an Item
*
* @param msg the received message
*/
void handle_item_selected(const char* msg) ;
/**
* Handle s session action message
*
* @param msg the received message
*/
void handle_session_action(const char* msg) ;
//---------------------------------------------------------------------------------------//
// handlers for specific insert procedures
/**
* Handle the insertion of a new ImaegFrameTimeAxis
*
* @param msg the received message
*/
void handle_insert_imageframe_time_axis(const char* msg) ;
/**
* Handle the insertion of a new MarkerTimeAxis
*
* @param msg the received message
*/
void handle_insert_marker_time_axis(const char* msg) ;
/**
* Handle the insertion of a time axis group (a scene)
*
* @param msg the received message
*/
void handle_insert_imageframe_group(const char* msg) ;
/**
* Handle the insertion of a new ImageFrameItem
*
* @param msg the received message
*/
void handle_insert_imageframe_view(const char* msg) ;
/**
* Handle the insertion of a new MarkerItem
*
* @param msg the received message
*/
void handle_insert_marker_view(const char* msg) ;
//---------------------------------------------------------------------------------------//
// handlers for specific removal procedures
/**
* Handle the removal of an ImageTimeAxis
*
* @param msg the received message
*/
void handle_remove_imageframe_time_axis(const char* msg) ;
/**
* Handle the removal of an MarkerTimeAxis
*
* @param msg the received message
*/
void handle_remove_marker_time_axis(const char* msg) ;
/**
* Handle the removal of an ImageFrameTimeAxisGroup
*
* @param msg the received message
*/
void handle_remove_imageframe_time_axis_group(const char* msg) ;
/**
* Handle the removal of an ImageFrameItem
*
* @param msg the received message
*/
void handle_remove_imageframe_view(const char* msg) ;
/**
* Handle the removal of an MarkerItem
*
* @param msg the received message
*/
void handle_remove_marker_view(const char* msg) ;
//---------------------------------------------------------------------------------------//
// handlers for the specific rename procedures
/**
* Handle the renaming of an ImageTimeAxis
*
* @param msg the received message
*/
void handle_rename_imageframe_time_axis(const char* msg) ;
/**
* Handle the renaming of an MarkerTimeAxis
*
* @param msg the received message
*/
void handle_rename_marker_time_axis(const char* msg) ;
/**
* Handle the renaming of an ImageFrameItem
*
* @param msg the received message
*/
void handle_rename_imageframe_time_axis_group(const char* msg) ;
/**
* Handle the renaming of an ImageFrameItem
*
* @param msg the received message
*/
void handle_rename_imageframe_view(const char* msg) ;
/**
* Handle the renaming of an Marker
*
* @param msg the received message
*/
void handle_rename_marker_view(const char* msg) ;
//---------------------------------------------------------------------------------------//
// handlers for data request
/**
* Handle a request for the sessnio naem fo the current session
* We return a failure state if no session is open
*
* @param msg the received message
*/
void handle_session_name_request(const char* msg) ;
//---------------------------------------------------------------------------------------//
// handlers for specific item update changes
/**
* Handle ImageFrameView positional changes
*
* @param msg the received message
*/
void handle_imageframe_view_position_update(const char* msg) ;
/**
* Handle ImageFrameView Duration changes
*
* @param msg the received message
*/
void handle_imageframe_view_duration_update(const char* msg) ;
/**
* Handle ImageFrameView Position Lock Constraint changes
*
* @param msg the received message
*/
void handle_imageframe_position_lock_update(const char* msg) ;
/**
* Handle ImageFrameView Maximum Duration changes
*
* @param msg the received message
*/
void handle_imageframe_view_max_duration_update(const char* msg) ;
/**
* Handle image frame max duration enable constraint changes
*
* @param msg the received message
*/
void handle_imageframe_view_max_duration_enable_update(const char* msg) ;
/**
* Handle ImageFrameView Minimum Duration changes
*
* @param msg the received message
*/
void handle_imageframe_view_min_duration_update(const char* msg) ;
/**
* Handle image frame min duration enable constraint changes
*
* @param msg the received message
*/
void handle_imageframe_view_min_duration_enable_update(const char* msg) ;
/**
* Handle MarkerView position changes
*
* @param msg the received message
*/
void handle_marker_view_position_update(const char* msg) ;
/**
* Handle MarkerView duration changes
*
* @param msg the received message
*/
void handle_marker_view_duration_update(const char* msg) ;
/**
* Handle MarkerView Position Lock Constraint changes
*
* @param msg the received message
*/
void handle_marker_view_position_lock_update(const char* msg) ;
/**
* Handle MarkerView maximum duration changes
*
* @param msg the received message
*/
void handle_marker_view_max_duration_update(const char* msg) ;
/**
* Handle MarkerView minimum duration changes
*
* @param msg the received message
*/
void handle_marker_view_min_duration_update(const char* msg) ;
//---------------------------------------------------------------------------------------//
// handlers for Session Actions
/**
* Handle the opening of a named audio session
*
* @param msg the received message
*/
void handle_open_session(const char* msg) ;
/**
* Handle the closing of a named audio session
*
* @param msg the received message
*/
void handle_closed_session(const char* msg) ;
//---------------------------------------------------------------------------------------//
// handlers for the shutdown of the Image Compositor
/**
* Handle the shutdown message from the image compositor
*
* @param msg the received message
*/
void handle_shutdown(const char* msg) ;
//---------------------------------------------------------------------------------------//
// convenince methods to break up messages
/**
* Returns part of the received message as a std::string
*
* @param start the start character
* @param num_chars the number of characters to read
* @param the message to break apart
* @return the sub string of the message
*/
std::string get_message_part(int start, int32_t num_chars, const char* msg) ;
/**
* break up am image item description message
* we break the mesage up into the parent Image Track id and size,
* the parent group id and size, and the image id and size
*
* @param track_id
* @param track_id_size
* @param scene_id
* @param scene_id_size
* @param item_id
* @param item_id_size
*/
void decompose_imageframe_item_desc(const char* msg, int& position, std::string& track_id, int& track_id_size, std::string& scene_id, int& scene_id_size, std::string& item_id, int& item_id_size) ;
/**
* Compose a description of the specified image frame view
* The description consists of the parent track name size and name,
* the parent group name size and name, and the item name size and name
*
* @param ifv the item to compose a description of
* @param buffer the buffer to write the description
*/
void compose_imageframe_item_desc(ImageFrameView* ifv, std::ostringstream& buffer) ;
/**
* Compose a description of the specified marker view
* The description consists of the parent track name size and name,
* and the item name size and name
*
* @param mv the item to compose a description of
* @param buffer the buffer to write the description
*/
void compose_marker_item_desc(MarkerView* mv, std::ostringstream& buffer) ;
/**
* Returns the ImageFrameView from the specified description
* The errcode parameter is used to indicate the item which caused
* an error on failure of this method
* 0 = suces
* 1 = the track item was not found
* 2 = the group item was not found
* 3 = the imageframe item was not found
*
* @paran track_id the track on which the item is placed
* @param group_id the group in which the item is a member
* @param item_id the id of the item
* @param int32_t reference used for error codes on failure
* @param errmsg populated with a description of the error on failure
* @return the described item on success, 0 otherwise
*/
ImageFrameView* get_imageframe_view_from_desc(const std::string& track_id, const std::string& group_ud, const std::string& item_id, int& errcode, std::string& errmsg) ;
//---------------------------------------------------------------------------------------//
// Convenince Message Send Methods
/**
* Sends a message throught the socket
*
* @param msg the message to send
* @return the return value of the socket call
*/
int send_message(const std::string& msg) ;
/**
* Reads a message from the Socket
*
* @param msg a string to populate with the received message
* @return the return value from the socket call
*/
int read_message(std::string& msg) ;
/**
* Convenience method to compose and send a success messasge back to the Image Compositor
*
*/
void send_return_success() ;
/**
* Convenience method to compose and send a failure messasge back to the Image Compositor
*
* @param msg the failure message
*/
void send_return_failure(const std::string& msg) ;
//---------------------------------------------------------------------------------------//
// Memebr Data
/** Our instance of the socket handler, singleton */
static ImageFrameSocketHandler* _instance ;
/** The Ardour PublicEditor */
PublicEditor& thePublicEditor ;
/** the socket file descriptor */
int theArdourToCompositorSocket ;
/** This stores the 'tag' returned from gdk_input_add, which is required for removing the input */
int theGdkInputTag ;
} ; /* class ImageFrameSocketHandler */
#endif /* __ardour_gtk_imageframe_socket_handler_h__ */